SIEMENS MiniSmart * High-side switch Short-circuit protection e Input protection * Overtemperature protection with hysteresis * Overload protection * Overvoltage protection Switching inductive load * Clamp of negative output voltage with inductive loads Undervoltage shutdown * Maximum current internally limited Package: SOT 223 Type Ordering code BSP 452 Q67000-S271 Maximum Ratings BSP 452 wo Pins OUT GND IN Veo Parameter Values Unit Supply voltage 40 Load current self-limited hisc Maximum input current +5 mA Inductive load switch-off energy dissipation tod Operating temperature range Storage temperature range -40 ...4150 -55 ...+150 Max. power dissipation (DC)") Tx =25C 1.8 Thermal resistance chip - soldering point: chip - ambient:") 70 Controt ve Clreuit t Temperature Sensor we j 2 an GND Val NYY TT 1) BSP 452 on epoxy pcb 40 mm x 40 mm x 1.5 mm with 6 cm? copper area for Vp connection Semiconductor Group 502 04.96 SIEMENS BSP 452 Electrical Characteristics Parameter and Conditions Symbol Values Unit at Tj = 25 C, Vbb = 13.5V unless otherwise specified min | typ iz max Load Switching Capabilities and Characteristics On-state resistance (pin 4 to 1) {.= 0.5 A, Vn = high Tj= 25C | Aon --| 0.16 0.2 Q _ T= 150C 7 7 0.4 Nominal load current (pin 4 to 1)? lLasoy 1.7 -- -- A ISO Standard: Von = Voo - Vout =05V Tg = 85 C Turn-on time to 90% Vour | ton -- tbd 100 ys Turn-off time to 10% Vout | tort -- tbd 150 Ru= 242 Slew rate on dV /dt,, -- 2 tbd} V/us 10 to 30% Vour, AL = 242 Slew rate off -dWdtor -- 2 tbd} V/us 70 to 40% Vout: RA =24Q Input Allowable input voltage range, (pin 3 to 2) Vin -3.0 -- Vop Vv Input turn-on threshold voltage Sf Vinita) - -- 3.5 V Tj = -40...4150C Input turn-off threshold voltage Vint) 1.5 = -- Vv T= -40...4150C Input threshold hysteresis AVinct) -- 0.5 -- Vv Off state input current (pin 3) Viniot) = 1.2 V | fincorty 10 -~ 60 HA Tj = -40,..+150C On state input current (pin 3) Vinton) = 3.0 V to Vin | incon 10 -- 100 HA Ty = -40...4150C *h(Iso) characterizes the MOSFET part of the device and may be higher than the shortcircuit current J_(Sc) of he whole device Semiconductor Group 503 SIEMENS BSP 452 Parameter and Conditions Symbol Values Unit at 7) = 25 C, Vb = 13.5V unless otherwise specified min | typ | max Operating Parameters Operating voltage) Tj =-40...4150C | Vooion) 5.0 - 34 V Undervoltage shutdown T; =-40...4150C | Viotunaen 3.5 - 5 Vv Undervoltage shutdown Tj =-40...4150C | Voocunder) 3.5 -- 5.0 Vv Undervoltage restart Ty =-40...425C | Voowu ssty - -- 6.5 Vv 7 =+150C 7.0 Undervoltage restart of charge pumpe Voprucp) - 7 - Vv see diagram page 4 Undervoltage hysteresis A Vopiunder) -- 1 -- Vv AVoptunder) = Vobcu rst) - Veb(under) Overvoltage shutdown Tj =-40...+150C | Vanover 34 - 42 V Overvoltage restart Tj =-40...4150C | Vito rst) 33 -- -- Vv Overvoltage hysteresis Tj =-40...4150C | AVbpiover - 0.7 -- Vv Standby current (pin 4), Vin = low 7) =-40...4125C | heyom -- 10 25 HA Operating current (pin 2), Vn =5 V lanp -- 1 1.6 mA Protection Functions Current limit (pin 4 to 1) T= 26C | fysc) 0.7 1.5 2 A Tj = -40...+150C 0.7 -| 24 Overvoltage protection fpp=4mA Tj =-40...+150C | Voriaz) 41 = - V Output clamp (ind. load switch off) Vonicu) -- 47 -- Vv at Vour=Vi- Vonreu: hy = 4mA Thermal overload trip temperature Tir 150 -- -- C Thermal hysteresis ATh 7 10 *- K Inductive load switch-off energy dissipation Eas -- - tbd J 3) At supply voltage increase up to Ven= 5.6 V typ without charge pump, Vout =Vbp - 2 V 4) while demagnetizing load inductance, dissipated energy is EAS= fYoncct) *it(t) dt, Vonien) approx. Eag= Vp" * Ir * ( VonicuVe ? Semiconductor Group 504 SIEMENS Max. allowable power dissipation Prot =f (Ta, Tsp) Prot [W 18 pt4s2.xic \ ; ee \ 0 25 50 78 100 125150 Ta, TsplC] On state resistance (Vbb-pin to OUT-pin) Ron =f (TI) Vpbp = 13-5 Vi IL = O.5A Ron [9] 0.4 0.35 fo | 0.9 | fon452.xdc 0.25 0.2 | 0.15 - 0.05 | 0 J} | 60 25 0 2 50 75 100 125 150 Ty (PC) Semiconductor Group Figure 6: Undervoltage restart of charge pumpe ( Von [V] Vbptoven V, | ple cp) $= Voo [V] charge pump starts at Vpojucp) about 7 V typ. 505